diff --git a/comfy_extras/nodes_string.py b/comfy_extras/nodes_string.py
index 925a40da8..97485c8c5 100644
--- a/comfy_extras/nodes_string.py
+++ b/comfy_extras/nodes_string.py
@@ -1,10 +1,41 @@
 import re
 import json
+import string
 from typing_extensions import override
 
 from comfy_api.latest import ComfyExtension, io
 
 
+class StringFormat(io.ComfyNode):
+    @classmethod
+    def define_schema(cls) -> io.Schema:
+        autogrow = io.Autogrow.TemplateNames(
+            input=io.AnyType.Input("value"),
+            names=list(string.ascii_lowercase),
+            min=0,
+        )
+        return io.Schema(
+            node_id="StringFormat",
+            display_name="Format Text",
+            category="text",
+            search_aliases=["string", "format"],
+            description="Same as Python's string format method. Supports all of Python's format options and features.",
+            inputs=[
+                io.Autogrow.Input("values", template=autogrow),
+                io.String.Input("f_string", default="{a}", multiline=True),
+            ],
+            outputs=[
+                io.String.Output(),
+            ],
+        )
+
+    @classmethod
+    def execute(
+        cls, values: io.Autogrow.Type, f_string: str
+    ) -> io.NodeOutput:
+        return io.NodeOutput(f_string.format(**values))
+
+
 class StringConcatenate(io.ComfyNode):
     @classmethod
     def define_schema(cls):
@@ -413,6 +444,7 @@ class StringExtension(ComfyExtension):
     @override
     async def get_node_list(self) -> list[type[io.ComfyNode]]:
         return [
+            StringFormat,
             StringConcatenate,
             StringSubstring,
             StringLength,
diff --git a/openapi.yaml b/openapi.yaml
index bc1ae16fa..2658b9b86 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -4162,7 +4162,8 @@ paths:
                   description: Display name for the API key
                 description:
                   type: string
-                  description: User-provided description for the key
+                  description: User-provided description of the key's purpose
+                  maxLength: 5000
       responses:
         "201":
           description: API key created
@@ -7680,6 +7681,7 @@ components:
       required:
         - id
         - name
+        - description
       properties:
         id:
           type: string
@@ -7687,8 +7689,8 @@ components:
           type: string
         description:
           type: string
-          nullable: true
-          description: User-provided description
+          maxLength: 5000
+          description: User-provided description of the key's purpose. Always present in responses; empty string when no description was supplied on create.
         prefix:
           type: string
           description: First few characters of the key for identification
@@ -7709,6 +7711,7 @@ components:
       required:
         - id
         - name
+        - description
         - key
       properties:
         id:
@@ -7717,8 +7720,8 @@ components:
           type: string
         description:
           type: string
-          nullable: true
-          description: User-provided description
+          maxLength: 5000
+          description: User-provided description of the key's purpose. Always present in responses; empty string when no description was supplied on create.
         key:
           type: string
           description: Full API key value (only returned on creation)